It’s a proper starting point for the end of a TV series that blends the euphoric highs of musical and romantic comedy with the harsh emotional and psychological realities of its perfectly imperfect characters. Rebecca’s mid-flight overdose last season was a thoroughly deglamorized depiction of a plot point often played for shock and sensation; just as the writers didn’t let their protagonist take the easy way out in front of the judge, they’ve refused to treat her diagnosis as some magical cure-all.

“It isn’t anything but a way to identify a strategy for feeling better,” Brosh McKenna said. “It’s a beginning of a long road.”

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Crazy Ex-Girlfriend’s road is one that’s always had an end in sight: The creators conceived the series as a four-season arc. “This is a story about a finite time in a woman’s life,” Bloom said. “We’re not telling the entire life story of Rebecca—we’re telling the story of this moment in time.” In a final act revolving around recovery and starting from scratch—the very things Rebecca was seeking when she left New York—Bloom and Brosh McKenna have set out to bring things full circle, reprising songs and bringing back as many characters as they can. “I really like taking thinking of, like, themes from the first season and twisting them on their head—that’s very fun for me,” Bloom said.

One of those familiar faces will no longer resemble himself: Rebecca’s ex-flame Greg Serrano, who’ll be played by Pitch Perfect alum Skylar Astin, rather than Santino Fontana, who originated the role. It’s an unorthodox casting move and a playful metaphor for the way people change over time—the Greg who finally shipped off to Emory College in season two is not the Greg who’s returning to West Covina. “We wanted it to come full circle back to the first season,” Bloom said. “And then we also thought, ‘Oh, well, at this point if we were to bring the character back, something would have to be fundamentally different because Rebecca is fundamentally different and he would be different in similar ways.”

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How do the creators hope their series is remembered? “As something that was consistent,” said Brosh McKenna. “Three or four episodes in, when it was clear our ratings were horrible, I said, ‘Look, I don’t know that we’ll ever make a show that has very high ratings, but I think we have a shot to make one of those shows that’s remembered in the long run of TV history as something that was special and good.”

Bloom’s response: “As something that took musical theater, which is an American art form and commented on it, but also used it to further story, and advanced it. A show that deconstructed tropes in a really cool way, from a female perspective.”

No matter how the show, its characters, or its themes linger in the popular imagination, Brosh McKenna knows there’s one number from Crazy Ex-Girlfriend that will never leave her head: “The First Penis I Saw.” “It’s so catchy,” she said. “If we’re talking about the music, on my own, I’ve found that’s the one I’m going to cue up first.”